Finding the Fourth Proportional to 52,464.57, 72,399 and 28,590.74

Step by Step Solution

1. Step 1: Write the proportion equation
   52,464.57 : 72,399 = 28,590.74 : x
2. Step 2: Convert to fraction form
   52,464.57/72,399 = 28,590.74/x
3. Step 3: Cross multiply
   52,464.57x = 72,399 × 28,590.74
4. Step 4: Simplify right side
   52,464.57x = 2,069,940,985.26
5. Step 5: Solve for x
   x = 2,069,940,985.26/52,464.57
6. Step 6: Final answer
   x = 39,454.07